“In the past the client’s aerial data was collected by photogrammetric flights made by real planes, but for this project the rail authority specified UAVs, Its team specified the resolution required, which was 15 cm per pixel (we achieved 10 cm), and ten of their engineers also went into the …

“The best money our survey department has ever spent That 2010 contract was worth 400 million pounds, so similar in size to today’s A6 project. There, our contractor used 18 full-time surveyors, with four guys out there measuring, all day every day. At 40 pounds per hour, each, that’s a …